Kate Middleton's sapphire engagement ring 'dupe' available from Marks and Spencer for £19.50

You can now buy an almost identical version of Kate Middleton's ring from Marks and Spencer [Image: Getty]

It is one of the most iconic engagement rings in the world - but you can now get your hands on an almost identical version of Kate Middleton’s stunning piece of jewellery for a much more reasonable price.

The Duchess of Cambridge, 37, was given the sapphire piece, believed to be worth £300,000, by Prince William, 37, when he proposed in Kenya in October 2010.

Kate, then aged 28, debuted the ring - which previously belonged to Princess Diana - at their engagement announcement the following month.

The mum-of-three still regularly wears the piece, which features 14 solitaire diamonds and a setting consisting of 18-carat white gold.